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PHENOLS
56問 • 9ヶ月前
  • HERSHEY VALERIE BERNARDINO
    • 通報

    問題一覧

  • 1

    Organic aromatic compounds wherein the hydroxyl group is attached to a benze ring

    Phenols

  • 2

    Considered as alcohols due to their chemical behavior

    Phenol

  • 3

    The difference of phenols with is alcohol is technically due to its _____ ring

    phenyl

  • 4

    Phenols are also known as _______ or carbolic acid

    hydroxybenzene

  • 5

    Toxic, colorless crystalline solid with sweet tarry odor

    Phenol

  • 6

    Usually employed as an antiseptic and disinfectant

    Phenol

  • 7

    Used in cosmetic formulations and manufacture of some drugs (precursor)

    Phenol

  • 8

    Phenols have ___ boiling points as compared to hydrocarbons having the same molecular masses

    higher

  • 9

    Boiling point of phenols is mainly due to what intermolecular force in between its OH groups

    H-bonding

  • 10

    What happens to the boiling point of phenols once the number of carbon atoms increases

    increases

  • 11

    Solubility of phenols is governed by its ability to perform intermolecular H-bonding with _____ solvents

    polar

  • 12

    H-bonds make it possible for phenol to be _____ to the water

    slightly soluble

  • 13

    An increase in the size of the aryl group attached to the hydroxyl group _____ it solubility in water

    decreases

  • 14

    Phenols are acidic in nature due to its reactivity with active metals (Na, K, etc.) to form corresponding _____

    phenoxides

  • 15

    _____ hybridized C of the benzene ring attached to the OH group functions as electron withdrawing group

    sp2

  • 16

    Sp2 hybridized C of the benzene ring attached to the OH groups _____ the electron density of the oxygen

    decreases

  • 17

    Due to the delocalization of the electrons in the benzene ring, phenoxide ions are _____

    more stable

  • 18

    Phenols are _____ than alcohols

    more acidic

  • 19

    In substituted phenols, its acidity ____ if an electron donating group is attached to the ring

    decreases

  • 20

    Synthesis of phenols is called the _____ of primary aromatic amines

    diazotization

  • 21

    Benzene diazonium chloride is formed when a primary aromatic amines with nitrous acid (NaNO2 + HCl) at what temperature

    5°C

  • 22

    Diazonium salts are highly reactive and upon warming with water, we be hydrolyzed in to phenol

    True

  • 23

    Solubility of phenol in 5% NaOh in solubility test

    soluble

  • 24

    Color of phenol in 5% NaOH in solubility test

    Clear dark brown to black solution

  • 25

    Test to identify the solubility of phenols

    Solubility test

  • 26

    Principle where phenols react with dilute aqueous sodium hydroxide to form sodium phenoxide

    Solubility test

  • 27

    Sodium phenoxide is _____ with water compared to phenol due to its phenyl ring

    more soluble

  • 28

    Color of 1% phenol in reaction with ferric chloride

    purple solution

  • 29

    Color of 1% cathecol in reaction with ferric chloride

    clear colorless solution

  • 30

    Color of 1% thymol in reaction with ferric chloride

    clear pale green solution

  • 31

    Color of 1% a-naphthol in reaction with ferric chloride

    dark red solution

  • 32

    Test to the detect the presence of phenolic compounds

    Reaction with ferric chloride

  • 33

    Positive result of reaction with ferric chloride test

    Colored complexes

  • 34

    Reagent used in reaction with ferric chloride

    Ferric chloride

  • 35

    Reagent to detect the presence of phenolic compounds

    Ferric chloride

  • 36

    Principle: formation of ferric phenoxide that absorbs visible light to give n excited state in which electrons are delocalized over both the iron atom and the conjugated organic system

    Reaction with ferric chloride

  • 37

    Color of 1% phenol in bromine water test

    Clear colorless solution with white precipitate

  • 38

    Color of salicylic acid in bromine water test

    Clear colorless solution with white precipitate

  • 39

    Test that can be used to identify phenolics, however, other compounds may also yield positive results

    Bromine water test

  • 40

    Reagent used to identify phenolics

    Bromine water

  • 41

    Positive result in bromine water test

    clear colorless solution with white precipitate

  • 42

    Principle of bromine water test

    Bromination of phenol results to 2,4,6-tribromophenol product which appears as white precipitate while the side product of hydrobromic acid results to decolorization of the solution with an odor of an antiseptic

  • 43

    Color of 5% HCl in formation of phenolphthalein test

    Clear colorless solution

  • 44

    Color of 5% NaOH in formation of phenolphthalein test

    Pink solution

  • 45

    Phenol can be used as _____ in the synthesis of several organic compounds

    precursor

  • 46

    Indicator used in an acid-base titration

    phenolphthalein

  • 47

    Phenol reacts with phthalic anhydride under an acid catalyst using an _____ aromatic substitution reaction

    electrophilic

  • 48

    Color of phenol in acidic solution

    colorless

  • 49

    Color of phenol in basic solutions

    Pink to magenta

  • 50

    Color of 1% phenol in millon's test

    Clear golden brown solution

  • 51

    Color of 5% albumin in millon's tests

    Clear yellowish solution with red precipitate

  • 52

    Test to determine the presence of phenolic compounds in amino acids

    Millon's test

  • 53

    Reagent made of mercurous nitrate (HgNO3) and mercuric nitarate (Hg(No3)2) in nitric acid (HNO3)

    Millon's reagent

  • 54

    Positive result in millon's test

    Red precipitate

  • 55

    The only amino acid with phenol in its structure

    tyrosine

  • 56

    Principle of Millon's test

    Amino acids and proteins with phenol radicals react with Millon’s reagent to form red colored complexes

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    問題一覧

  • 1

    Organic aromatic compounds wherein the hydroxyl group is attached to a benze ring

    Phenols

  • 2

    Considered as alcohols due to their chemical behavior

    Phenol

  • 3

    The difference of phenols with is alcohol is technically due to its _____ ring

    phenyl

  • 4

    Phenols are also known as _______ or carbolic acid

    hydroxybenzene

  • 5

    Toxic, colorless crystalline solid with sweet tarry odor

    Phenol

  • 6

    Usually employed as an antiseptic and disinfectant

    Phenol

  • 7

    Used in cosmetic formulations and manufacture of some drugs (precursor)

    Phenol

  • 8

    Phenols have ___ boiling points as compared to hydrocarbons having the same molecular masses

    higher

  • 9

    Boiling point of phenols is mainly due to what intermolecular force in between its OH groups

    H-bonding

  • 10

    What happens to the boiling point of phenols once the number of carbon atoms increases

    increases

  • 11

    Solubility of phenols is governed by its ability to perform intermolecular H-bonding with _____ solvents

    polar

  • 12

    H-bonds make it possible for phenol to be _____ to the water

    slightly soluble

  • 13

    An increase in the size of the aryl group attached to the hydroxyl group _____ it solubility in water

    decreases

  • 14

    Phenols are acidic in nature due to its reactivity with active metals (Na, K, etc.) to form corresponding _____

    phenoxides

  • 15

    _____ hybridized C of the benzene ring attached to the OH group functions as electron withdrawing group

    sp2

  • 16

    Sp2 hybridized C of the benzene ring attached to the OH groups _____ the electron density of the oxygen

    decreases

  • 17

    Due to the delocalization of the electrons in the benzene ring, phenoxide ions are _____

    more stable

  • 18

    Phenols are _____ than alcohols

    more acidic

  • 19

    In substituted phenols, its acidity ____ if an electron donating group is attached to the ring

    decreases

  • 20

    Synthesis of phenols is called the _____ of primary aromatic amines

    diazotization

  • 21

    Benzene diazonium chloride is formed when a primary aromatic amines with nitrous acid (NaNO2 + HCl) at what temperature

    5°C

  • 22

    Diazonium salts are highly reactive and upon warming with water, we be hydrolyzed in to phenol

    True

  • 23

    Solubility of phenol in 5% NaOh in solubility test

    soluble

  • 24

    Color of phenol in 5% NaOH in solubility test

    Clear dark brown to black solution

  • 25

    Test to identify the solubility of phenols

    Solubility test

  • 26

    Principle where phenols react with dilute aqueous sodium hydroxide to form sodium phenoxide

    Solubility test

  • 27

    Sodium phenoxide is _____ with water compared to phenol due to its phenyl ring

    more soluble

  • 28

    Color of 1% phenol in reaction with ferric chloride

    purple solution

  • 29

    Color of 1% cathecol in reaction with ferric chloride

    clear colorless solution

  • 30

    Color of 1% thymol in reaction with ferric chloride

    clear pale green solution

  • 31

    Color of 1% a-naphthol in reaction with ferric chloride

    dark red solution

  • 32

    Test to the detect the presence of phenolic compounds

    Reaction with ferric chloride

  • 33

    Positive result of reaction with ferric chloride test

    Colored complexes

  • 34

    Reagent used in reaction with ferric chloride

    Ferric chloride

  • 35

    Reagent to detect the presence of phenolic compounds

    Ferric chloride

  • 36

    Principle: formation of ferric phenoxide that absorbs visible light to give n excited state in which electrons are delocalized over both the iron atom and the conjugated organic system

    Reaction with ferric chloride

  • 37

    Color of 1% phenol in bromine water test

    Clear colorless solution with white precipitate

  • 38

    Color of salicylic acid in bromine water test

    Clear colorless solution with white precipitate

  • 39

    Test that can be used to identify phenolics, however, other compounds may also yield positive results

    Bromine water test

  • 40

    Reagent used to identify phenolics

    Bromine water

  • 41

    Positive result in bromine water test

    clear colorless solution with white precipitate

  • 42

    Principle of bromine water test

    Bromination of phenol results to 2,4,6-tribromophenol product which appears as white precipitate while the side product of hydrobromic acid results to decolorization of the solution with an odor of an antiseptic

  • 43

    Color of 5% HCl in formation of phenolphthalein test

    Clear colorless solution

  • 44

    Color of 5% NaOH in formation of phenolphthalein test

    Pink solution

  • 45

    Phenol can be used as _____ in the synthesis of several organic compounds

    precursor

  • 46

    Indicator used in an acid-base titration

    phenolphthalein

  • 47

    Phenol reacts with phthalic anhydride under an acid catalyst using an _____ aromatic substitution reaction

    electrophilic

  • 48

    Color of phenol in acidic solution

    colorless

  • 49

    Color of phenol in basic solutions

    Pink to magenta

  • 50

    Color of 1% phenol in millon's test

    Clear golden brown solution

  • 51

    Color of 5% albumin in millon's tests

    Clear yellowish solution with red precipitate

  • 52

    Test to determine the presence of phenolic compounds in amino acids

    Millon's test

  • 53

    Reagent made of mercurous nitrate (HgNO3) and mercuric nitarate (Hg(No3)2) in nitric acid (HNO3)

    Millon's reagent

  • 54

    Positive result in millon's test

    Red precipitate

  • 55

    The only amino acid with phenol in its structure

    tyrosine

  • 56

    Principle of Millon's test

    Amino acids and proteins with phenol radicals react with Millon’s reagent to form red colored complexes